STT-1
(24) DYNAMICS IN/OUT SWITCH "COMP + LIM IN"
Pushbutton switch which places an opto-compressor/limiter into the signal path. When switch is
depressed and LED is illuminated, opto-electronic gain reduction elements are activated. When
pushbutton switch is not depressed, gain reduction is not in circuit. Opto-compressor/limiter can
be used with or without additional active amplifier stage (vacuum tube or solid-state).
(25) MUTE SELECT SWITCH "OUTPUT MUTE"
Pushbutton switch which mutes all main outputs, balanced and unbalanced. When switch is de-
pressed and LED is illuminated, audio signal is muted at the main outputs. Does not effect Di-
rect Output from the front end amplifiers. When switch is not depressed, muting is not active.
(26) VU METER FUNCTION SELECT SWITCH "METER GR"
Pushbutton switch which determines the VU meter function. When switch is depressed and
LED is illuminated, VU meter indicates the amount of dynamics gain reduction. When switch is
not depressed, VU meter indicates the actual output level of the balanced main outputs. A meter
reading of 0 VU is equivalent to a balanced output of +4 dBu. NOTE: Unbalanced main output
is 6 dB lower output than shown on VU meter. Gain reduction metering is disabled when de-es-
ser is enabled.
(27) MASTER LEVEL CONTROL "OUTPUT MASTER"
Master output level control. Fully CCW is fully off. Fully CW offers an additional 10 dB of gain
relative to the front-end amplifier circuits. Unity output level is achieved when this control is
approimately 2:00 o'clock (at the tip of the right "bat wing"). At 10:00 o'clock, output level is
attenuated approximately -16 dB.
(28) VU METER ADJUSTMENT "METER ZERO"
Inset multi-turn trimmer potentiometer which adjusts the VU meter zero point when meter is
set to Gain Reduction. Use insulated "wand" tool designed for trimpot adjustment. Allow ample
time (1/2 hour recommended) for the STT-1 Origin circuits and chassis to 'warm up' and reach
a stable operating temperature before attempting to set the GR zero point of VU meter.
(29) VU METER
True analog-level meter providing indication of output level or gain reduction. Meter is backlit.
Meter backlighting also serves as operational 'pilot' light.
(30) POWER SWITCH "POWER"
Rocker switch for switching AC line power on and off.
(31) TEMPLATE
(not shown) A logging template for use with the STT-1 Origin is available for download on the
Millennia web site at: http://www.mil-media.com/origin.html
